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The Dolores Heights pied-a-terre that Facebook’s Mark Zuckerberg and his bride bought a few months back for almost $10 million has turned into a real fixer-upper.

According to San Francisco city records, the couple’s contractor has taken out five construction permits this year for:

– A $720,000 addition of a first-floor office, media room, half-bathroom, mud room, laundry room, wine room and wet bar. Plus, a new second floor half-bathroom and remodel of the second, third and fourth floors.

– $750,000 in other additions to the lower floors, as well as a new roof and windows and reconfigured landscaping.

It all adds up to about $1.6 million, though workers at the site tell us they wouldn’t be surprised if the final tab comes to several million more. They expect the job to take a year.

Last week, the entire house – just a couple of blocks from hipster magnet Dolores Park – was pretty well stripped to the studs. Crews were busily working on a new basement garage, complete with a turntable pad so cars can get in and out more easily.

“It’s nice to be rich,” said one passer-by surveying the scene.

Records show at least one person lodged a complaint with the city last spring after part of an external wall was removed before any permits were issued.

So far, Zuckerberg and his wife, Priscilla Chan, haven’t even publicly confirmed they own the 5,542-square-foot, four-bedroom house, and the workers say they haven’t actually seen the couple. It was purchased through a holding company run by a lawyer who specializes in forming trusts for high-end clients.

Reps for Zuckerberg and Facebook politely declined comment.

Supervisor Scott Wiener tells us he knew the Facebook founder and his wife had bought the house in his district, though he’s still waiting to run into them.

“Maybe I’ll bring over the apple pie,” he said.

In the huddle: There was a big stadium sit-down at Raiders headquarters the other day.

Team owner Mark Davis, along with Oakland and Alameda County officials, met to update a delegation from the National Football League on the prospects for a new stadium.

Sources tell us Davis appears sincerely to want the Raiders to stay in Oakland. However, reports from city planners indicate the money for a new Raiders home is as elusive as ever.

“The fact is that Davis doesn’t have finances like, say, a Jerry Jones (owner of the Dallas Cowboys) to swing a stadium deal on his own,” said one person who was at the meeting. “We’d have to ask the voters to help.”

And while no one said it at the meeting, everyone knows the chances of voters helping out with a new stadium deal – while they are still paying off $20 million a year for the 1990s renovation of the old one – are slim to none.

People at the meeting – none of whom would speak on the record, because the session was supposed to be private – say their efforts to convince the NFL that there’s still hope in the East Bay weren’t boosted by the tardy entrance of Oakland Mayor Jean Quan.

“She arrived 20 minutes late,” said our attendee. “She apologized, saying she was held up by a phone call.”

And finally: Even before the Kiwis have clinched victory in the America’s Cup, the New Zealand Herald was online Friday with this familiar-sounding prediction from the financial wizards: “Should the America’s Cup be brought back to New Zealand, it would drive more than $500 million into the economy.”

The paper said the rosy estimate was based on the assumption that “the same number of syndicates and super yachts show up as for the unsuccessful 2003 defense” – when 10 teams competed in Auckland.

Those kinds of riches, unfortunately, are something San Francisco never saw – though city officials tell us it will be year’s end before they know the true financial impact of hosting the yachting fest.

In the meantime, the mayor, port officials and others are hosting fundraisers to cover the millions of dollars in expenses that the city incurred from playing host.

San Francisco Chronicle columnists Phillip Matier and Andrew Ross appear Sundays, Mondays and Wednesdays. Matier can be seen on the KPIX-TV morning and evening news. He can also be heard on KCBS radio Monday through Friday at 7:50 a.m. and 5:50 p.m. Got a tip? Call (415) 777-8815, or e-mail matierandross@sfchronicle.com.